445913880 has 64 divisors (see below), whose sum is σ = 1395912960. Its totient is φ = 113739648.

The previous prime is 445913873. The next prime is 445913887. The reversal of 445913880 is 88319544.

It is an interprime number because it is at equal distance from previous prime (445913873) and next prime (445913887).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445913887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78022 + ... + 83541.

It is an arithmetic number, because the mean of its divisors is an integer number (21811140).

Almost surely, 2^445913880 is an apocalyptic number.

445913880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445913880 is an abundant number, since it is smaller than the sum of its proper divisors (949999080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445913880 is a wasteful number, since it uses less digits than its factorization.

445913880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161600 (or 161596 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 445913880 is about 21116.6730334113. The cubic root of 445913880 is about 763.9829450795.

The spelling of 445913880 in words is "four hundred forty-five million, nine hundred thirteen thousand, eight hundred eighty".